1.6x^2-10.0x+6.2=0

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Solution for 1.6x^2-10.0x+6.2=0 equation:


Simplifying
1.6x2 + -10.0x + 6.2 = 0

Reorder the terms:
6.2 + -10.0x + 1.6x2 = 0

Solving
6.2 + -10.0x + 1.6x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
1.6 the coefficient of the squared term: 

Divide each side by '1.6'.
3.875 + -6.25x + x2 = 0

Move the constant term to the right:

Add '-3.875' to each side of the equation.
3.875 + -6.25x + -3.875 + x2 = 0 + -3.875

Reorder the terms:
3.875 + -3.875 + -6.25x + x2 = 0 + -3.875

Combine like terms: 3.875 + -3.875 = 0.000
0.000 + -6.25x + x2 = 0 + -3.875
-6.25x + x2 = 0 + -3.875

Combine like terms: 0 + -3.875 = -3.875
-6.25x + x2 = -3.875

The x term is -6.25x.  Take half its coefficient (-3.125).
Square it (9.765625) and add it to both sides.

Add '9.765625' to each side of the equation.
-6.25x + 9.765625 + x2 = -3.875 + 9.765625

Reorder the terms:
9.765625 + -6.25x + x2 = -3.875 + 9.765625

Combine like terms: -3.875 + 9.765625 = 5.890625
9.765625 + -6.25x + x2 = 5.890625

Factor a perfect square on the left side:
(x + -3.125)(x + -3.125) = 5.890625

Calculate the square root of the right side: 2.42706098

Break this problem into two subproblems by setting 
(x + -3.125) equal to 2.42706098 and -2.42706098.

Subproblem 1

x + -3.125 = 2.42706098 Simplifying x + -3.125 = 2.42706098 Reorder the terms: -3.125 + x = 2.42706098 Solving -3.125 + x = 2.42706098 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.125' to each side of the equation. -3.125 + 3.125 + x = 2.42706098 + 3.125 Combine like terms: -3.125 + 3.125 = 0.000 0.000 + x = 2.42706098 + 3.125 x = 2.42706098 + 3.125 Combine like terms: 2.42706098 + 3.125 = 5.55206098 x = 5.55206098 Simplifying x = 5.55206098

Subproblem 2

x + -3.125 = -2.42706098 Simplifying x + -3.125 = -2.42706098 Reorder the terms: -3.125 + x = -2.42706098 Solving -3.125 + x = -2.42706098 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.125' to each side of the equation. -3.125 + 3.125 + x = -2.42706098 + 3.125 Combine like terms: -3.125 + 3.125 = 0.000 0.000 + x = -2.42706098 + 3.125 x = -2.42706098 + 3.125 Combine like terms: -2.42706098 + 3.125 = 0.69793902 x = 0.69793902 Simplifying x = 0.69793902

Solution

The solution to the problem is based on the solutions from the subproblems. x = {5.55206098, 0.69793902}

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